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HoloDust said: No, not really, it is based on similar architecture, specially TMU and ROP, but shader units have more in common with R600 (2xxx) family. If you look at 2600Pro/XT, 360 is basically 2 of those slapped together, but at lower clock and significantly lower combined memory bandwidth. Some math and educated guesstimation are required to get to that number at the end. Actual performance is higher of course, but considering we can't really measure how much specific customizations play role in final products, taking just vanilla numbers is a good starting point for the sake of discussion (hence, 141VP of 7850 for PS4, and 96VP of 7770 for XOne, though in reality, both solutions perform lot better). |
A exemple... the RSX is supposed to be close a GeForce 7800... the Xenon is a better GPU than RSX... and the GeForce 7800 are in the 12.3 to 15.9 VPs... I'm pretty sure Xenon will be over 15 VP at that table.
In fact most forum and techs guys uses X1900 for X360 (~25VP) and GTX 7900 (~22VP) for PS3 but I think that a little exagerated... I think it is more in line with ~20VP (360) and 16VP(PS3)
A good article about that: http://br.dir.groups.yahoo.com/group/gamejutsu/message/2690
Edit - lol sorry I forget the article is in Portugue... look just the graph.
Using the 20VPs for X360:
PS4: ~7x X360
Xbone: ~5x X360
Only comparing GPU power.
